Patent US4584189A successfully refreshed from Google Patents.
US4584189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bactericidal toothpastes
Assignee: Aqualon Co
•
Filing: 1984-09-28
•
Granted: 1986-04-22
•
Expires: 2004-09-28
Abstract
Abstract Disclosed are dentifrice compositions comprising a cationic bactericide, water, a dental abrasive, and a hydrophobically modified hydroxyethyl cellulose thickener.
Inventors
- 👤 Dianne P. Leipold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:12
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/90; A61K8/30; A61K8/40; A61K8/41; A61K8/416; A61K8/73; A61K8/731; A61Q; A61Q11/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
72 words
In a dentifrice composition having water, a cationic bactericidal agent, a finely divided dental abrasive, and a thickener, the improvement which comprises as the thickener at least about 0.1% by weight of a hydrophobically modified hydroxyethyl cellulose which is hydrophobically modified with a hydrocarbon radical having 8 to 25 carbon atoms in an amount from about 0.1 to about 2.0% and has a hydroxyethyl M.S. of from about 2.5 to about 3.5.
Claim 2
Dependent Claim
72 words
In a dentifrice composition having water, a cationic bactericidal agent, a finely divided dental abrasive, and a thickener, the improvement which comprises as the thickener at least about 0.1% by weight of a hydrophobically modified hydroxyethyl cellulose which is hydrophobically modified with a hydrocarbon radical having 8 to 25 carbon atoms in an amount from about 0.1 to about 2.0% and has a hydroxyethyl M.S. of from about 2.5 to about 3.5.
Claim 3
Dependent Claim
27 words
The composition of claim 1 wherein the hydrophobically modified hydroxyethyl cellulose is present in an amount from about 0.1% to about 1.0% by weight of the composition.
Claim 4
Dependent Claim
11 words
The composition of claim 1 which further comprises a nonionic surfactant.
Claim 5
Dependent Claim
24 words
The composition of claim 1 whereas the hydrophobically modified hydroxyethyl cellulose is hydrophobically modified with a hydrocarbon radical having 8 to 20 carbon atoms.
Claim 6
Dependent Claim
79 words
In a dentifrice composition having water, a cationic bactericidal agent, a finely divided dental abrasive, a humectant, a vehicle for the humectant and a thickener, the improvement which comprises as the thickener at least about 0.1% by weight of a hydrophobically modified hydroxyethyl cellulose which is hydrophobically modified with a hydrocarbon radical having 8 to 25 carbon atoms in an amount from about 0.1 to about 2.0% and has a hydroxyethyl M.S. of from about 2.5 to about 3.5.
Claim 7
Dependent Claim
79 words
In a dentifrice composition having water, a cationic bactericidal agent, a finely divided dental abrasive, a humectant, a vehicle for the humectant and a thickener, the improvement which comprises as the thickener at least about 0.1% by weight of a hydrophobically modified hydroxyethyl cellulose which is hydrophobically modified with a hydrocarbon radical having 8 to 25 carbon atoms in an amount from about 0.1 to about 2.0% and has a hydroxyethyl M.S. of from about 2.5 to about 3.5.
Claim 8
Dependent Claim
27 words
The composition of claim 5 wherein the hydrophobically modified hydroxyethyl cellulose is present in an amount from about 0.1% to about 1.0% by weight of the composition.
Claim 9
Dependent Claim
12 words
The composition of claim 5 which further comprises a silica thickening agent.
Claim 10
Dependent Claim
22 words
The composition of claim 5 which further comprises a polyethylene glycol having a molecular weight of from about 300 to about 20,000.
Claim 11
Dependent Claim
24 words
The composition of claim 8 wherein the polyethylene glycol is present in an amount of 1% to about 5% by weight of the composition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |